Pixel art of the game looks gorgeous. They might be 3rd party assets but you managed to arrange and used them very well, there are no inconsistencies anywhere or nothing sticks out. But i had to break 1 star bcs that would be unfair to the developers which made the assets themselves.
Combat is interesting but that card system is not really my cup of tea. I just can't see the point of using cards in combat. I think you were inspired by deck building roguelite games like Slay the Spire. Maybe it didn't appeal to me much bcs i haven't played too much deckbuilding games idk.
I gave a solid 4/5 for boss design. Boss fight were challenging and i had some fun plus their visual design is very good but i played games with better boss fights in this jam so i had to scale it according to that.
I think this is a well made game with bold and innovative/experimental design choices. I always respect developers who are trying new things and avoid imitating other games. Good job on your work and good luck!